The chemical used as a ‘fixer’ in photography
Sodium sulphate
Sodium thiosulphate
Ammonium sulphate
Borax
Which of the following is the correct sequence of the wavelength of radiation
UV > Green > IR > Hard X-rays
IR > Green > UV > Hard X-rays
UV > Hard X-rays > IR > Green
IR > Hard X-ray > Green > UV
Which of the following fertilizer has the maximum % of nitrogen
Urea
Calcium cyanamide
Calcium ammonium nitrate
Which of the following is not contains in Portland cement
Ca3Al2O6
Ca3SiO5
Ca2Sio4
Ca3(PO4)2
Which one of the following acid is used for etching glass
H2SO4
HNO3
HF
HCl
Nuclear fusion requires very temperatures so as to overcome
Van der waal’s forces
Nuclear force
Gravitational force
Coulomb force
What is the colour of oxygen in solid state
Pale yellow
Pale blue
Light green
Greenish yellow
In surgery, metal pins are used for joining together broken bones. the metal pins remains uncorroded in the body. What is the material of the pins
Copper
Iron
Aluminium
Titanium
H2o is liquid and H2S is a gas because
Oxygen forms stronger hydrogen bond than sulphur
Oxygen is less electronegative than sulphur
Atomic radius of oxygen is less than that of sulphur
Atomic radius of oxygen is greater than that of sulphur
In chemical terms, what are the alums used for purifying water for drinking purpose
Hydrated chlorides
Double nitrate
Double sulphate
Nitrates of aluminium
